shrub/pub/doc/hoon/runes/bc/bcls.md
2015-06-19 17:16:48 -04:00

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[buclus `$+` %bcls](#bcls)
==========================
Signature
`$+` a tile for a gate which accepts `p` and produces `q`. `$+` is
similar to a function signature. `$+(p q)` is a `%bark` of a `%weed`, or
`$_(|+(p _q))`.
Produces
--------
Tile: `$_(|+(p _q))`
Sample
------
`p` is a [tile]() `q` is a [tile]()
Tall form
---------
$+ p q
Wide form
---------
$+(p q)
Irregular form
--------------
None
Examples
--------
++ sort :: quicksort
~/ %sort
!:
|* [a=(list) b=$+([* *] ?)]
=> .(a ^.(homo a))
|- ^+ a
?~ a ~
%+ weld
$(a (skim t.a |=(c=_i.a (b c i.a))))
^+ t.a
[i.a $(a (skim t.a |=(c=_i.a !(b c i.a))))]
In ++sort, `$+` is a tile for a comparator gate, which takes two nouns
and produces a loobean.
~zod/try=> |=(a=@ (add 2 a))
<1.sgg [a=@ [[@da @ta] [@p @ta] *''] @n <246.qra 41.uuw 374.glo 100.rip 1.ypj %164>]>
~zod/try=> `$+(@ @)`|=(a=@ (add 2 a))
<1|crm [@ [[@da @ta] [@p @ta] *''] @n <246.qra 41.uuw 374.glo 100.rip 1.ypj %164>]>
~zod/try=> +<:|=(a=@ (add 2 a))
a=0
~zod/try=> +<:`$+(@ @)`|=(a=@ (add 2 a))
! -axis.6
! peek-park
! exit